The blind disk is used to shut off partial segments of pipelines for pressure tests. Industry standard is to make to the slip on length thru the hub. These are three different components that used in piping for positive isolation of the section of a line or equipment during maintenance and shutdown. Spectacle blinds should be made from a plate or forging specification, approved for use by asme b31. It is different than a valve in that the blind is a permanent or long term isolation device.
All blinds are stamped with line size and flange rating, and ground to provide smooth edges. C 70600 cu ni 9010, c 71500 cu ni 7030 duplex steel spectacle blind flanges. Spectacle blind, slip binds, spades and spacers which are also known as figure8, paddle blank and spacer. Flate face ff, raised face rf, ring type joint rtj ss flange standards types and pressure class. The thickness of the web or tie bar dimension wt, shall be 0. Larger sizes and heavier flange rating available upon request. Spectacle blind flanges, welding neck flange, slip on flange, blind. A spectacle flange is machined from a single piece of metal that is cut to match the pipe size, fit between two pipe flanges and.
A spectacle blind is a safety device used to isolate a section of line or a piece of equipment when the line or equipment needs to be inspected or removed from service. Flowell spectacle figure 8 blinds thicknesses are in accordance with api 590 to assure that these units will withstand the temperature and pressure of an ansi rated flange. Paddle spacer blind sets any rating, thickness or material. With the keckley quick acting line blind, one operator can change a 6 line blind in five minutes without the need for special tools as compared to a typical 6 spectacle blind, which takes two maintenance men approximately 112 hours to change over. Paddle blank type 1 click any image above to enlarge it and lock it in place, then scroll to the bottom table for dimensions spectacle blind flange classes choose your pressure class below. Dimensions of class 600 blind and spacer t weld 125 to 250 rms o weld o b t asme b16.
Raised or flat face flanges available in stainless steel 304, 316 and carbon steel. An 8 blind or a spectacle blind is a piping fitting that is used for providing positive isolation. Jan 10, 2016 a spectacle blind or spec blind, abbreviated as sb, is a safety device used to isolate a section of line or piece of equipment when the line or equipment needs to be inspected or removed from service. Wt thickness of the web or tie bar should be 6 mm minimum, or equal to thickness t if less than 6 mm. Positive isolation to quickly stop the fluid flow in case of emergencies. Ae1 ogl ssvao8f91a ansv ariov,loads anoowwo lonaoud anououe uonaoud. Preferably, the standardised spectacle blankdesign is used for the possibility to shut off or open the flow sectional area. Spectacle blind, slip blind and spacers paddle blank and. In pressure classes 400, 600, 900, 1500 and 2500, the height of raised face is approximately 6. A spectacle blind is basically made up of two metal discs attached to each other by a metal strip as shown in the figure. We offer elbows, flanges and fittings like caps, tees, reducers and tailor made components to complete our piping proposition. Blind dimensions is a local family run blind business based in buckingham. Dec 21, 2015 a spectical blind is a combination of both a ring and single spacer.
Standard dimensions of spectacle blind 8 blind enggcyclopedia. Spectacle blind, spacer, figure 8 blank all kind of cs and ss materials. Astm a105 astm a350 lf2astm a516 gr60, gr65, gr70, astm a182 f304, f304l, f316, f316lastm a182 f51, f53astm a182 f11, f222 specification. A spec blind is not a good choice for simple diverting flow. A spectacle blind or spec blind, abbreviated as sb, is a safety device used to isolate a section of line or piece of equipment when the line or equipment needs to be inspected or removed from service. We also offer custommade class 600 spectacle blind flanges that have been widely appreciated by our clients. Schuf fetterolf line blind valves lead to significant cost and time savings. A spectacle blind is a combination of a single blind solid plate and a ring spacer manufactured, for field convenience, as a single unit. Files are available under licenses specified on their description page. This page was last edited on 18 february 2019, at 07. A paddle blind also known as spade blind, skillet blind, line blind, pancake blind, or slip blind is basically the solid half of a spectacle blind.
C and y dimensions do not include face height dimensions a, r, x are identical to asme b16. A spectacle blind is often made from two metal discs that are attached to each other by a small section of steel. All manufacturing information is printed on the handle of the slide blind. When required, your stock or code number can be added, eventually together with a colour coding. In practice, these dimensions have been rounded round off upwards. Bar steel we supply round, square, hexagonal and flat barsteel in a broad range of dimensions and steel qualities. The spectacles are stamped on the blind portion and the blinds and spacers on the grips. For line sizes greater than 24 dimensions shown are for mss sp44 series a specifications api605. The hollowed disc allows fluid flow and solid disc is used for positive isolation. Dimensions, materials, illustrations, and all other product details. Unlike other pipe blind variants, such as the spectacle blind, the hot.
Dimensions of class 150 blind and spacer t weld 125 to 250 rms o weld o b t asme b16. We supply and install a wide range of made to measure window blinds including. Paddle blind dimensions with hydrotest thickness chart note. D hole size where required should be the same as the flange bolt hole. Spectacle flange, alloy 20 spectacle flange in all dimensions to satisfy any. For line sizes greater than 24 dimensions shown are for mss sp44 series a specifications api605 series b are also available line sizes up to 96 available. Possibly all you need is a valve on the branch and the main line. Dimensions are in millimeters unless otherwise indicated. Preferably, the standardised spectacleblankdesign is used for the possibility to shut off or open the flow sectional area. The hollowed disc allows fluid flow and solid disc is used for positive. Guru gautam steel is one of the leaders amongst manufacturers and exporters of spades ring spacers flanges, class 150 300 600 900 1500 2500 in india.
Spades ring spacers flanges, class 150 300 600 900 1500. Spectacle blind flange largest inventory rental or. A spectacle blind flange also known as a figure8 blind flage is generally a piece of metal that is cut to fit between two pipe flanges and usually sandwiched between two gaskets. Blank thicknesses over 24 nps were calculated using the equation for blanks in asme b31. In comparison to traditional smaller size line blinds to say twelve inches, the camset can save between one and four hours per man per job.
Dimensions ansi class 900lb dimensions ansi class 1500lb dimensions ansi class 2500lb note 2. Spectacle blind, flange spade, ring spacer asme b16. In these two pressure classes, almost all suppliers of flanges, show in their catalog or brochure, the h and b dimensions including the raised face height. A spectacle blind flange is often made from two metal discs that are attached to each other by a small section of steel. Inside mount measure the inside of the window frame in 3 places for width and height. Standard dimensions of spectacle blinds are specified as per asme. Choose mount type measure record measurements inside mount window treatments are most commonly installed on the inside of the window frame. A spectacle blindis a combination of a single blind solid plate and a ring spacer manufactured, for field convenience, as a single unit. Rollers, verticals, venetians, pleated, roman, velux and perfect fit and cover the areas of buckingham, winslow, brackley, towcester, milton keynes and surrounding villages. Hole sizes where required due to bolt spacing shall be the same as the flange bolt hole.
Spectacle blind dimensions a spectacle blind is generally a piece of metal that is cut to fit between two pipe flanges and usually sandwiched between two gaskets. Spectacle blind, slip blind and spacers paddle blank and spacer. All structured data from the file and property namespaces is available under the creative commons cc0 license. Paddle blind dimensions with hydrotest thickness chart sizes and thicknesses meet the following specifications.
Titan fcis spectacle blinds, single blinds, and ring spacers are designed in accordance. In order to prevent the activation of safety devices or to limit the volume of pressure spaces, a blind disk is clamped between two flanges. The largest inventory of spectacle blinds figure8 blind blank, eye glass blind blank in any size, rating or alloy. A faster, safer alternative to a traditional spectacle blind. Jun 16, 2016 a spectacle blind flange also known as a figure8 blind flage is generally a piece of metal that is cut to fit between two pipe flanges and usually sandwiched between two gaskets. A spectical blind is a combination of both a ring and single spacer. Spectacle blind flanges, stainless steel spectacle blind. Click on the link to learn about the chemical and mechanical properties. Because we manufacture our own paddle spacer and blind sets, we can make them to your exact customized needs.
A spectacle flange is a safety device used to isolate a section of line or piece of equipment when the line or equipment needs to be inspected or removed from service. Outside mount occassionally you will need to mount your window treatments. As a standard all items are hard stamped with size, class, material quality, heat number and our manufacturers symbol. Paddle blind dimensions thickness chart usa industries inc. Astm asme asa 105 astm asme a 350, astm a 181 lf 2 a516 gr. S basic allowable stress and e quality factor values were determined from tables a1 and a1a from b31. Its used to safely isolate a section of the line during.
Get spectacle blind at best price with product specifications. You can simply rotate a spectacle blind by 180 degrees to close or open a pipe to allow fluid to pass. Spades ring spacers flanges, class 150 300 600 900. A spectacle blind is generally a piece of metal that is cut to fit between two pipe flanges and usually sandwiched between two gaskets. Engineer says blind in open position should use symbol. Spectacle blinds are available in standard sizes up to 24 inches and in forged material grades like astm a105 hightemperature carbon, a350 lowtemperature carbon, and various astm a182 grades alloy, stainless steel, duplex. A paddle blind is often made from one solid metal disc and will usually have a thin length of metal attached to one end to be used as a handle. A spectacle blind flange is often made from two metal discs that are. Spectacular blind easy and fast spectacle blind change. To make switching from one to the other, especially in the larger sizes, a bolt hole or slot in the spacer bar is provided for rotation. Spectacle blind flange largest inventory rental or purchase. Keckley quick acting line blinds are commonly found in oil and refinery, petrochemical, pulp and paper, and maritime industries. The hot tools slide blind is absa approved and falls under asme b16. Spectacular blind easy and fast spectacle blind change device.
C 10100, 10200, 10300, 10800, 12000, 12200, 70600, 71500, uns no. Spectacle blinds are a single piece of machined metal designed to eliminate the hassle of having seperate paddle blind and spacer sets. Spectacle flange,spades and ringspacers astm a234 butt. For larger sized blinds the time saving can be anything from 4 to 12 hours per man per job.
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